Mott Haven is a primarily residential neighborhood in the southwestern section of the Bronx borough in New York City. Zip codes include 10451, 10454, and 10455. The neighborhood is part of Bronx Community Board 1. Its boundaries, starting from the north and moving clockwise are East 149th Street to the north, the Bruckner Expressway to the east, the Bronx Kill waterway to the south, and the Harlem River to the west.

Mott Haven is a high-density neighborhood with a population of roughly 50,000 within a square mile. The residents are 72.3% Hispanic/Latino, 24.7% Black or African American, 1.7% White, 0.4% Asian, and 1% as multiracial or other. Like most neighborhoods in New York City, the vast majority of households are renter-occupied. The neighborhood is largely Puerto Rican, with smaller numbers of African Americans and Dominicans present.

Mott Haven is dominated by tenement-style apartment buildings and large public housing complexes. There are three historical districts consisting of brownstone-style rowhouses. In the last two decades, construction of modern 2- and 3-unit rowhouses and apartment buildings has increased the percentage of owner-occupiers. The neighborhood contains one of the highest concentrations of NYCHA projects in the Bronx. The total land area is roughly one square mile. The terrain is low-lying and flat except around St. Mary's Park where it is somewhat hilly.

The Mott Haven East Historic District is located on East 139th and East 140th Street between Brook and Willis Avenues. The district contains rows of handsome brownstones designed by William O'Gorman and William Hornum in 1883 combining Dutch and Flemish architectural aspects on the north side of E.140th Street and neo-Grecian aspects on the south side of E.140th Street and on E.139th Street.[7]

The Bertine Block Historic District is located on East 136th Street between Brook and Willis Avenues. The district contains yellow-faced brick brownstones designed by Edward Bertine between 1891 and 1895.[8][9]

In addition, St. Ann's Episcopal Church is located on the west side of St. Ann's Avenue between East 139th and East 141st Streets. It is The Bronx' oldest church, having been built in 1841 and dedicated to Gouverneur Morris's mother Ann. Notable figures buried there include Lewis Morris, a signer of the Declaration of Independence; Gouverneur Morris; and former mayor of New York, R. H. Morris.

As the city below grew, the area quickly developed residentially. At the same time, an upper-middle class residential area, marked by brownstones built in an elaborate and architecturally daring fashion, started to grow along Alexander Avenue by the 1890s. (Doctors Row a/k/a the Irish Fifth Ave.) A series of brownstones on E. 134th St, east of Willis Ave., was known as Judges' Row. Soon after, the Bronx grew more quickly, especially with public transit into the area, including the IRT Ninth Avenue Line. By the early 20th century, the population density of the area supported the construction of many tenement-style apartment buildings.

From the end of the 19th century through the 1940s, Mott Haven was a mixed German-American (north of E. 145th St.) and Irish-American neighborhood (south of E. 145th St), with an Italian enclave west of Lincoln Ave. The derogatory term "pig" for a policeman is thought to have originated here because of a tough Irish cop who wielded his night stick on Willis Ave. drunks without mercy, known as Paddy the Pig of the 40 Pct.

One of the largest parades in NYC took place here in the late 1940s and early 1950s. It was organized by the veterans of the Irish Republican Army, who marched every Easter Sunday, down Willis Ave. from the Hub to E. 138th St., thence west to St. Jerome's. The Star of Munster Ballroom at the NE corner of Willis Ave. and E. 138th St., was a center of Irish music for decades. It was speculated at one time that there were more bars on Willis Avenue than on any other city street, given its short length. More recorded Irish musicians lived in Mott Haven than in any place outside of Ireland.

The first Puerto Rican settlements came in the late 1940s along the length of Brook Ave. African-Americans came into the area when Patterson Houses were built.

North Side Board of Trade

North New York Congregationalist Church

Mott Haven and Port Morris were the first neighborhoods to give rise to the term "South Bronx". Together, they were earlier known as the North Side or North New York. This area was part of New York County after the incorporation of Greater NY in 1898. The Chase Manhattan Bank at Third Ave. and E. 137th St., was originally the North Side Board of Trade Building (1912). It later became the North Side Savings Bank, which became Dollar Dry Dock, which became Chase.

In the 1940s when the Bronx was usually divided into the East Bronx and West Bronx, a group of social workers identified a pocket of poverty on East 134th Street, east of Brown Place and called it the South Bronx. This pocket of poverty would spread in part due to an illegal practice known as blockbusting and to Robert Moses building several housing projects in the neighborhood. The poverty greatly expanded northward, following the post-war phenomenon colloquially referred to as white flight, reaching a peak in the 1960s when the socioeconomic North Bronx-South Bronx boundary reached Fordham Road. At this time a wave of arson destroyed or damaged many of the residential, commercial, and industrial structures in the area.

Today the North Bronx-South Bronx distinction remains more common than the traditional East Bronx-West Bronx distinction, and some still regard Fordham Road as the boundary. Though crime has declined versus the highs of the crack epidemic and revitalization of former abandoned properties is taking place, the neighborhood continues to deal with serious crime issues due to its significant population in poverty. There have been significant strides to increase gentrification of the neighborhood, and the most changes are seen on Bruckner Boulevard, Alexander Avenue, and Lincoln Avenue. E. 138th Street has seen minor changes with apartment buildings under new renovations, new businesses have arrived. Mott Haven is home to a community-supported agriculture program hosted at Brook Park.